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Fertilization

Fertilization, the fusion of the sperm and egg,

usually occurs in the upper third of the oviduct.

Thirty minutes after ejaculation, sperm are present in the oviduct,

In humans, after the sperm has been released into the female reproductive tract by ejaculation, the acrosomal cap must be removed.

  In humans, this process, known as capacitation, occurs in the uterus, while fertilization takes place in the upper portion of the fallopian tube

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